Model MO260 combination Pin/Pinless Moisture Meter monitors moisture in wood and other building materials with virtually no surface damage. Choose from %WME (wood moisture equivalent) pin moisture reading (6.0 to 94.8%) or Relative pinless moisture reading for non-invasive measurement (0 to 99.9). It has a measurement depth to 0.75″ (22mm) below the surface. The digital LCD readout with backlighting also features a tri-color LED bargraph. Model RH490 Precision Hygro-Thermometer measures Temperature, Humidity, Dew Point, Wet Bulb, and Mixing Ratio in GPP (grains per pound/grains per kilogram). It features less than 30 second RH response time with 2%RH accuracy and a dual backlit display. The kit is supplied in a hard carrying case that provides protection and organization for the meters and accessories whenever they are needed.